The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX225-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 225mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
The AirTAC SAIJ50X225-10-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers a 982 N push force at 0.5 MPa and provides a usable travel window of 215 to 225 mm, letting you dial back the nominal 225 mm stroke by up to 10 mm. The extruded aluminum barrel includes sensor grooves on both sides, and this -S variant includes a magnet for position detection.
Equipped with a SUS420J2 stainless steel rod (option A) and PT tapered ports, this unit is built for durability. The rear adjuster acts purely as a mechanical stop to fine-tune the end position during commissioning without adding external stops. It is not a locking device, so the cylinder relies on live air to hold a load. For position holding without pressure, consider the SAIL or BSAI series.
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX225-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 225 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M16×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 30 mm |
| Max stroke | Up to 1200 mm |
Specifications follow the official AirTAC SAI series datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Port options: G (BSPP) / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×225 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAI-family variants: SAID (double rod), SAIJ (adjustable stroke), SAIL (with lock), SAIF (with valve), BSAI (enclasp / clamp-lock), and SAI-S with built-in magnet. Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B); seals: TPU (blank) / Viton H / NBR N.
Dial in the exact 215 to 225 mm travel distance during machine commissioning without physically swapping the cylinder or adding external stopper blocks.
Quickly adapt the retract end-position on a packaging line when handling slightly different carton sizes, saving setup time and reducing downtime.
Apply a consistent 982 N push force at 0.5 MPa for pressing components, using the fine adjustment to prevent overtravel and damage to the workpiece.
Choose this 50 mm bore when you need more thrust than the 40 mm version (528 N pull at 0.5 MPa) but want a lighter frame than the 63 mm class. The 10 mm adjustment window is perfect for product changeovers where exact end-of-stroke positioning varies slightly. Mounting options include the SAIJ subset of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. Since the 225 mm stroke is under 300 mm, side-load stress is minimal, but an external guide is still recommended for heavy loads. The integrated magnet works seamlessly with AirTAC CMSE reed and DMSE electronic sensors.
Quick checklist
The rear adjuster allows you to shorten the effective stroke within a 215 to 225 mm window. It provides up to 10 mm of mechanical retraction tuning without needing to change the cylinder itself.
At 0.5 MPa, it provides 982 N of push force and 825 N of pull force. The operational speed ranges from 30 to 800 mm/s, supported by adjustable air cushions at both ends.
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